Ron
I wasn't referencing the 70 because of you, just sort of a line in the sand--
You won't find the condensation in the valve covers when you take them off while they re warm. It will form when the temp goes down thru the dew point-- People with heated garages can actually cause there cars doors to rust as the moisture will form when the cars body temp goes thru dew point--double!!!
The cold car causes condensation of the moisture in the air in the garage, and then when leaving the garage the cooler putdoor temps will condense moisture in the body panels when the skin cools thru dew point once again--just like having a still
I'm not pointing any fingers at anyone---but stand by my point that warming the engine every so often isn't doing any good except for charging the battery--If the quality of your choice of
oil won't keep the parts from rusting you have made a poor choice in
oil!!!!!
If you need to exercise your vehicle, evercise the whole car---clutch, brakes, u-joints, steering,etc--if you can't do that , let it sit as you probably are doing more harm than good
Jerry